A total of 1000$was invested at compounded annual interest rate. At : GMAT Problem Solving (PS) Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack  It is currently 17 Jan 2017, 21:27 ### GMAT Club Daily Prep #### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email. Customized for You we will pick new questions that match your level based on your Timer History Track Your Progress every week, we’ll send you an estimated GMAT score based on your performance Practice Pays we will pick new questions that match your level based on your Timer History #### Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here. ### Request Expert Reply # Events & Promotions ###### Events & Promotions in June Open Detailed Calendar # A total of 1000$ was invested at compounded annual interest rate. At

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Senior Manager
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A total of 1000$was invested at compounded annual interest rate. At [#permalink] ### Show Tags 26 Aug 2011, 22:49 3 This post was BOOKMARKED 00:00 Difficulty: (N/A) Question Stats: 0% (00:00) correct 100% (03:43) wrong based on 9 sessions ### HideShow timer Statistics Well it's a very easy question which I seem to be getting wrong...for most of you this might be like a cherry on the cake hence, would REALLY appreciate if someone can help me with the workings. A total of 1000$ was invested at compounded annual interest rate. At the end of 12 years, the total value will be 4000$. How many years are needed to reach a total of 8000$.
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28 Aug 2011, 15:24
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1000*r^12 = 4000
r^12 = 4
(r^6)^2 = 2^2
r^6 = 2

It takes 6 years for the investment to double.

2 * 2 * 2 = r^6 * r^6 * r^6
8 = r^18

It takes 18 years for the investment to double three times.
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29 Aug 2011, 02:34
bodleyev nice way of approcahing the solution .. it definitely saves some time.
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Re: A total of 1000$was invested at compounded annual interest rate. At [#permalink] ### Show Tags 09 Dec 2015, 09:39 Hello from the GMAT Club BumpBot! Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos). Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________ Re: A total of 1000$ was invested at compounded annual interest rate. At   [#permalink] 09 Dec 2015, 09:39
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# A total of 1000\$ was invested at compounded annual interest rate. At

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